Ongoing geopolitical uncertainties - including recent developments in resource-rich Iran and Venezuela - have placed renewed spotlight on the issue of energy security.But what happens if these uncertainties deteriorate further into an energy security crisis - one that cripples our power supplies, including critical information technology (IT) systems? Themed «Are you ready for disruptions?», this year's Total Defence exercise, named Exercise SG Ready (ESR) 2026, will see businesses, communities and homes face simulated prolonged power outages, as critical IT systems struggle to operate under the energy strain.It is aimed at encouraging the public to plan for potential disruptions, including strengthening their continuity plans. Read more